Lower limb 4 Flashcards
upper medial border of popliteal fossa
semimembranosus
upper lateral border of popliteal fossa
biceps femoris
inferior boundary of popliteal fossa
gastrocnemius - 2 heads
6 contents of popliteal fossa
fat popliteal LN popliteal vein popliteal artery common fibular nerve and tibial nerve termination of small saphenous vein
division of posterior leg
2 groups - superficial and deep
Superficial posterior leg muscle
gastrocnemius
Innervation of gastrocnemius
tibial nerve
Function of plantaris
proprioceptive
Order of posterior leg structures passing behind medial malleolus
T - tibialis posterior
D - FDL
AVN - post tibial artery and vein, tibial nerve
H - FHL
Muscle beneath gastrocnemius
soleus
Innervation of posterior leg
tibial nerve
Arterial supply to posterior compartment
posterior tibial artery
4 muscles of deep posterior leg
tibialis posterior
FDL
FHL
popliteus
Popliteus action
unlocks knee and weakly flexes
Deep posterior leg muscles action on toes and ankle
flexion
What joints do eversion and inversion occur?
subtalar joints
How many layers of foot muscles?
4
Layer 1 of foot muscles
abductor hallicus
flexor digitorum brevis
abductor digiti minimi
Layer 2 of foot muscles
flexor hallicus longus
quadratus plantae
flexor digitorum longus
Nerves and arteries in layer 2 of foot muscles
lateral plantar nerve and artery
medial plantar nerve
2 terminal branches of tibial nerve innervating intrinsic foot muscles
medial and lateral plantar nerve
2 terminal branches of posterior tibial artery supplying foot
medial and lateral plantar artery
Function of foot arches
distribute body weight and act as shock absorbers
What resists the force drawing navicular and calcaneus apart?
plantar calcaneonavicular ligament
passive factors - foot arch
shape of bones
plantar aponeurosis
long plantar ligament
shot plantar ligament
dynamic factors - foot arch
intrinsic muscles of foot
long flexor tendons
tibilais anterior and fibularis longus tendon